Document Detail

Temperature stress and plant sexual reproduction: uncovering the weakest links.
MedLine Citation:
PMID:  20351019     Owner:  NLM     Status:  MEDLINE    
The reproductive (gametophytic) phase in flowering plants is often highly sensitive to hot or cold temperature stresses, with even a single hot day or cold night sometimes being fatal to reproductive success. This review describes studies of temperature stress on several crop plants, which suggest that pollen development and fertilization may often be the most sensitive reproductive stage. Transcriptome and proteomic studies on several plant species are beginning to identify stress response pathways that function during pollen development. An example is provided here of genotypic differences in the reproductive stress tolerance between two ecotypes of Arabidopsis thaliana Columbia (Col) and Hilversum (Hi-0), when reproducing under conditions of hot days and cold nights. Hi-0 exhibited a more severe reduction in seed set, correlated with a reduction in pollen tube growth potential and tropism defects. Hi-0 thus provides an Arabidopsis model to investigate strategies for improved stress tolerance in pollen. Understanding how different plants cope with stress during reproductive development offers the potential to identify genetic traits that could be manipulated to improve temperature tolerance in selected crop species being cultivated in marginal climates.
Kelly E Zinn; Meral Tunc-Ozdemir; Jeffrey F Harper
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.; Review     Date:  2010-03-29
Journal Detail:
Title:  Journal of experimental botany     Volume:  61     ISSN:  1460-2431     ISO Abbreviation:  J. Exp. Bot.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-04-28     Completed Date:  2010-09-14     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  9882906     Medline TA:  J Exp Bot     Country:  England    
Other Details:
Languages:  eng     Pagination:  1959-68     Citation Subset:  IM    
Biochemistry Department MS200, University of Nevada, Reno, NV 89557, USA.
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MeSH Terms
Fertilization / physiology*
Gene Expression Profiling
Models, Biological
Pollen / genetics,  growth & development
Stress, Physiological*
Grant Support
1R01 GM070813-01/GM/NIGMS NIH HHS

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